1. Medical Student. Current affiliation: Department of Pharmacology, Institute of Biomedicine, University of Turku, Turku 52, Finland.
2. Research Assistant. Current affiliation: Department of Psychology, University of California, Davis, California 95616.
3. Associate Professor of Anesthesia; Anesthesiology Service (112A), VA Medical Center, Palo Alto, California.
4. Professor of Biology in Anesthesia.